MFC获取窗口句柄的六种方法

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MFC获取窗口句柄的六种方法

1. CClientDC dc(this);
   
2. CString fun1;
   
3. //直接获得
   
4. fun1.Format("%ld", AfxGetMainWnd()->m_hWnd);
   
5. fun1 = "AfxGetMainWnd()->m_hWnd方法获取句柄号 = " + fun1;
   
6. dc.TextOut(20, 50, fun1);
   
7. //通过AfxGetApp()间接获得
   
8. fun1.Format("%ld", AfxGetApp()->GetMainWnd()->m_hWnd);
   
9. fun1 = "AfxGetApp()->GetMainWnd()->m_hWnd方法获取句柄号 = " + fun1;
   
10. dc.TextOut(20, 70, fun1);
    
11. //当前窗口
    
12. fun1.Format("%ld", GetForegroundWindow()->m_hWnd);
    
13. fun1 = "GetForegroundWindow()->m_hWnd 方法获取句柄号 = " + fun1;
    
14. dc.TextOut(20, 90, fun1);
    
15. //当前活动的窗口句柄
    
16. fun1.Format("%ld", GetActiveWindow()->m_hWnd);
    
17. fun1 = "GetActiveWindow->m_hWnd方法获取句柄号 = " + fun1;
    
18. dc.TextOut(20, 110, fun1);
    
19. //窗口名
    
20. AfxGetMainWnd()->SetWindowText("我的程序");
    
21. CWnd *hwnd = FindWindow(NULL, "我的程序");
    
22. if (hwnd)
    
23. {
    
24. fun1.Format("%ld", hwnd->m_hWnd);
    
25. fun1 = "FindWindow("GetWinHwnd" , NULL)->m_hWnd 方法获取句柄号 = " + fun1;
    
26. dc.TextOut(20, 130, fun1);
    
27. }
    
28. 
    
29. //利用GetSafeHwnd()
    
30. //  CWnd *hwnd = FindWindow(NULL, "我的程序");
    
31. if (hwnd)
    
32. {
    
33. fun1.Format("%ld", hwnd->GetSafeHwnd());
    
34. fun1 = "GetSafeHwnd() 方法获取句柄号 = " + fun1;
    
35. dc.TextOut(20, 150, fun1);
    
36. }

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